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2457 reviews
Headwaters Campground at Flagg Ranch is a well-maintained facility conveniently located between Yellowstone and Grand Teton, making it an ideal base for exploring both parks. Visitors appreciated the clean amenities, friendly staff, and additional features like a gas station, store, and free showers. However, some campers noted high prices at the store and close proximity of sites, which could lead to noise and lack of privacy. Overall, many expressed a desire to return due to the campground's positive aspects.
Based on guest feedback
4.3
Based on 2457 reviews
Showing 2375 reviews
August 21, 2023 Stayed at: 528, Loop: 500s
We had site 528. It was dusty because of cars driving by regularly. Also the sewer hookups are about a foot tall, which makes for awkward dump, even with the hose supports. Otherwise location is great and staff was friendly.
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August 21, 2023 Stayed at: 602, Loop: 600s
Great stay at Flagg Ranch! We stayed in the cabins and they were perfect. Great location for Teton and Yellowstone
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August 21, 2023 Stayed at: 627, Loop: 600s
Picked up a rodent that bothered us for a few nights and maneuvered around a few mud holes at the site. The sewer drain is uphill from the rv so made it very difficult to drain. It’s too far away from all the good hikes and would stay much closer to the Grand Tetons. It took about 35 minutes to get to a trailhead that was worth hiking. I wouldn’t stay here again or recommend it to anyone wanting to stay near the park.
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August 21, 2023 Stayed at: 528, Loop: 500s
We had site 528. It was dusty because of cars driving by regularly. Also the sewer hookups are about a foot tall, which makes for awkward dump, even with the hose supports. Otherwise location is great and staff was friendly.
Helpful
August 21, 2023 Stayed at: 602, Loop: 600s
Great stay at Flagg Ranch! We stayed in the cabins and they were perfect. Great location for Teton and Yellowstone
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August 19, 2023 Stayed at: 109, Loop: 100s
This is a great campground. Great bathroom and shower facilities. Plenty of hot water. There is even a dishwashing station with a sink and hot water. Really pretty setting in the trees. If you explore any of the JDR Parkway Wilderness Area (the wilderness between GTNP snd YNP) you will have it to yourself. It is gorgeous and wild.
The non electric cabin was great for five people. The bunks fit two comfortably and it was convenient to rent a cot for our fifth person. A sheet to cover the bunks was nice. You’ll definitely need some sort of light. The provided lantern was pretty dim. We cooked all our own food. The people using the dining facilities seemed to have waits of 45 minutes every evening.
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August 19, 2023 Stayed at: 109, Loop: 100s
This is a great campground. Great bathroom and shower facilities. Plenty of hot water. There is even a dishwashing station with a sink and hot water. Really pretty setting in the trees. If you explore any of the JDR Parkway Wilderness Area (the wilderness between GTNP snd YNP) you will have it to yourself. It is gorgeous and wild.
The non electric cabin was great for five people. The bunks fit two comfortably and it was convenient to rent a cot for our fifth person. A sheet to cover the bunks was nice. You’ll definitely need some sort of light. The provided lantern was pretty dim. We cooked all our own food. The people using the dining facilities seemed to have waits of 45 minutes every evening.
Helpful
August 19, 2023 Stayed at: 109, Loop: 100s
This is a great campground. Great bathroom and shower facilities. Plenty of hot water. There is even a dishwashing station with a sink and hot water. Really pretty setting in the trees. If you explore any of the JDR Parkway Wilderness Area (the wilderness between GTNP snd YNP) you will have it to yourself. It is gorgeous and wild.
The non electric cabin was great for five people. The bunks fit two comfortably and it was convenient to rent a cot for our fifth person. A sheet to cover the bunks was nice. You’ll definitely need some sort of light. The provided lantern was pretty dim. We cooked all our own food. The people using the dining facilities seemed to have waits of 45 minutes every evening.
Helpful
August 19, 2023 Stayed at: 109, Loop: 100s
This is a great campground. Great bathroom and shower facilities. Plenty of hot water. There is even a dishwashing station with a sink and hot water. Really pretty setting in the trees. If you explore any of the JDR Parkway Wilderness Area (the wilderness between GTNP snd YNP) you will have it to yourself. It is gorgeous and wild.
The non electric cabin was great for five people. The bunks fit two comfortably and it was convenient to rent a cot for our fifth person. A sheet to cover the bunks was nice. You’ll definitely need some sort of light. The provided lantern was pretty dim. We cooked all our own food. The people using the dining facilities seemed to have waits of 45 minutes every evening.
Helpful
August 18, 2023 Stayed at: 701, Loop: 700s
Excellent place to camp b/w Grant Teton and Yellowstone.
Helpful
1 Grassy Lake Road, Moran, WY 83013 United States
Elevation: 2,088 ft
The address for Headwaters at Flagg Ranch is located below; however, due to this property's remote location, GPS cannot always be relied on.
100 Grassy Lake Rd.
Moran, WY 83013
(Two miles south of the south gate of Yellowstone)
From Yellowston...
The address for Headwaters at Flagg Ranch is located below; however, due to this property's remote location, GPS cannot always be relied on.
100 Grassy Lake Rd.
Moran, WY 83013
(Two miles south of the south gate of Yellowstone)
From Yellowstone:
Follow the signage to the South gate of Yellowstone - about 40 mi from Old Faithful.
After exiting the south gate, Headwaters at Flagg Ranch will be just 2 mi South on the right side of the road.
From Jackson, WY:
Head North from Jackson on US 191/89.
Turn left to continue on US 191/89 at the Moran Junction and enter the Grand Teton National Park through the Moran entrance.
Continue straight through the Jackson Lake junction for another 21 mi.
Headwaters at Flagg Ranch will be located on the left side of the road.
As you pull into the property, the lodge will be located on your right and the campground will be on the left.
Please note Grassy Lake Road is a dirt and gravel road that leads to Ashton, Idaho. Four-wheel drive is strongly encouraged on this narrow single-lane road. It is not recommended for trailer traffic or large vehicles.
Headwaters Campground at Flagg Ranch is accessible via US 191/89, which connects to the Moran Junction. The campground is located approximately 2 miles south of the south gate of Yellowstone National Park.
The closest entrance is: South Entrance
Approximate drive: 2.4 mi · 4 min
The closest entrance is: Moran Entrance Station
Approximate drive: 24 mi · 41 min
Check out time
11AM
Last updated: November 4, 2026
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Nearby city: Idaho Falls, ID
Approx. 81 mi away (straight-line distance)
Elevation: 6,749 ft
Moran, WY
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